Actually GA goals remain pretty constant (or better: boring) for the Hungs in all 3 periods - Hungary, Croatia and Carpathia as homeland provinces and no special goals. What makes them a good choice though is their hefty bonus for conquered territories (2:1 or even 1:1), and given that there is plenty of land to expand into, at least in vanilla, your score should soon surpass most others. Even when the Hungarians are played by the AI and I control another, somewhat distant faction (without the possibility of direct intervention ), they regularly turn out to provide the toughest competition for the top spot.